If you want to explore repositories about a certain topic, find projects to contribute to, or learn which topics are most popular on GitHub, you can search topics with the search qualifiers is:featured or is:curated.

The is:featured search qualifier will narrow search results to the topics with the most repositories on GitHub. These topics are also featured at https://github.com/topics/.

The is:curated search qualifier will narrow search results to topics, which community members have added extra information to. For more information, see the explore repository at https://github.com/github/explore.